Locking attachment for calculating-machines.



,0. THIEME.

0R CALCULATING MACHINES. APPLICATION' FILED MAR. 2, 1918.

LOCKING ATTACHMENT F .Patented Feb. 18, 1919.

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fizzle/1222 0. IHIEIVIE. LOCKING ATTACHMENT FOR CALCULATING MACHINES.

APPLICATION FILED MAR.27, I9I8.

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LOCKING ATTACHMENT FOR CALCULATING MACHINES.

APPLICATIQN FILED MVAR. 2.7, 1918.

' Patented Feb. 18. 1919.

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o'rro THIEME, lor sr. Louis, nIssoUm, liissrofnon To Moon-HOPKINS BILLING., nacnnm country, or sr. Lotus, mssounr, a conronArIoN orMISSOURI.

v Looms A'r'raonxEN'r Fon cALcULArmG-Macnrnns.

Specication of Letters latent.

' Application led latch 27, 1918. Setill Noi 224,957.

6 vented a certain new and useful Im rovement in LockingAtta'chments for)a culating-Machines, of which the followlng 1s a fu l, clear, and exactdescription, such as will enable others skilled in the art to which itAappertains to make and use the same, reference being had to theaccompanying drawings, lforming part of-this specification, 1n which-Figure 1 is a vertical sectional view through the rear part of thecombined adding and calculatingmachine 'to which my present lockingattachment is applied.

Fig. 2 is a horizontal sectional View therethrough. v y

Fig. 3 is a detail side elevational view of the locking attachment.

Fig. 4 is aside elevational view of part of the means for operating theattachment.

Fig. 5 is a detail view of certain connections identified with the`locking means. f

Fig. 6 is a sectional view on line 6 6 of Fig. l.

Fig. 7 isa vertical sectionalview through a combined adding "andtypewriting machine to which my improved locking attachment is designedto Ybe applied. 1

This invention relates to a new and useful improvement in locking meansfor calculating machines, such for instance as the Moon-Hopkins billingmachine, which is a combined adding and typ'ewriting machine,

,and is a division of al1-application tiled by me May'20,1916, SerialNo. 98,853.

The object of the present invention is tov arrange in connection withthe tally rollv printing mechanism forming tlie subject matter of theparent case just above referred to, certain operating connectionstherefor which. in addition to their other functions",

provide a lock for insuring the full operation of such connections when1n operatlve position.

I shall Vnot in thefpresent application go 1 nto a detailed descriptionof the old and well known parts of the Moon-Hopkins billing machinereferred to in the parentap-l pllcation, but will briefly'state that 119indicates a set of reglster'wheels operated by the racks 100, whichracks. at their rear ends ia-gok printing segments 561 identified with.

the tally roll mechanism. 500 is the casing ofthe machine whichinclosesl the addingr department'thereof and is removable. casing isprovided with brackets 501 (sce Fig. 2), in which is mounted a shaft50:2. said shatthaving` a groove throughout its entire length, as shownin Fig. 3. On lthis grooved shaft are mounted the frame pieces 503 ofthe laterally movable paper carriage of the tally roll printingmechanism, these frame piecesl carrying at their upper ends'a serratedplate 504 on the edge of'which the tally roll strip may 'be torn, andlunder this plate is arranged the platen 505. 516`is the roll of paperwhich is supported bv Athe frame pleces 513 dependin 'from the framemembers 503. The strip rom this rollof tally paper is fed upwardlybetween suitable guiding and paper feeding rollers between the platenand the type carried by the type segments 561. The inking ribbon iswound Patented Feb. 18, 1619. y

Thisv y impression-'making movement of the platen 505 which isincidentlto the rocking'of the frames 503 when the shaft 5.02 is'rocked.' Theprinting impression on the tally-roll lstrip follows the rearwardrocking or positi`oning of the type-carryingsegments 561 to locateappropriate printing type in t-he printing line and under the inkingribbon In order to roclcsha-ft 502 to veffectl this print-ingimpression, said shaft is provided with an arm 568 whose outer endhas'an adjustable extension 569 coperating with the track plate 520secured to the casing 500 whereby, when the frame 503 is retracted,

the arm 569 serves as a stop to limit and adjust the retracted positionof` said frame, that is the position in lwhich the platen 505 standsaway from the printing type; p

The inner end of the lever 568 is rovided with an open-ended slot `568awhic lies ;in'

theLpath of movement of a in 570 onthel. -his ,armv is pro-.

upper end of an arm 570. p vided with springs 570b`tend'ing to holdit ina forward position with' its pin 2570* outv of or in advance of theslot-'568%- They lower end, of lever 570 is carried bythe,

rear end of the cam 571-loos'elymounted on' and Whose cam slot receivesaprollerv'on a.

tion of the machine, through the drlving 50 'i 5683,'1 provide a guardplate 581 having a connections just above described, the arm 570 will bedepressed and then lifted.

The means for moving the upper end ofA rod 570 rearwardly so that itspin 570a will engage with theslot 5688, consists of a link 57 2 having abifurcated rear end embracing the upper end of arm 570 and having a slotand pin connection with the side framing- ,of the machine whereby itsrear end is h eld upwardly. The forward end of this link endwith a framepart of the machine` and is provided with an arrow head 577a whosea-nticlinal portions coperate with stop blocks 579 pivotally arranged inadiustable y supports 578 slidingly mounted on the rack bar 39 on thepaper carriage` of the typewriting mechanism'. In the tabulation of thepaper carriage of the typewriting mechanism, when said carriage isarrested, one of the blocks 519 isintended vto occupy a position infront of the bar 577, irrespective of theprevious direction of movementof the paper carriage, so that a stop block 579 will thus cause the bar577 .to be. moved rearwardly and held in such rearward position whilethe paper carriage is so laterally adJusted. To avoid this automaticoperation of the bar 577, it is obvious that the blocks 579 mayberemoved from the rack 39 or. slid to one end of the rack bar. It isusual, however, to cordinate the positions of the blocks 579 with thearrested tabulatingmovement of the paper carriage so that at the end ofeach tabulating movement where 1t is desired to make a printingimpression' on the tally roll, the bar 5774 will be held rearwardly..The rearward position rof the bar 577 will locate the pin 57()a in theslot 568a (see Fig. 3) so that when the rock `shaft 81 makes a stroke itwill cause the lever 5,68 to be depressed, therebv rocking 'the frame503 and causing-the platen 505 to make a printing impression.

" In order to hold the pin 570?L in the slot guard finger 589J locatedadjacent the vforward end of slot 568% This guard plate is l mounted onthe shaft 502 and like the lever 568 projects through a shoulderedopening Cin the casing 500. A spring 583 tends to i vlift the forwardend of guard plate 581 upwardly until it is arrestedby the shoulder C ofthe opening C. The normal position of the parts is shown in Fig.. 1.Then the upper end of bar 570 is forced rearwardly so `that its pin 570awill be caused to enter the slot 568a before any rocking of shaft 81occurs, the parts will be in readiness to cause the platen 505 tov makea printing impression upon the rocking of shaft 81. This rocking ofshaft 81 causes the inner end of lever 568 to be pulled upwardly andconsequently the pin 570 will be located behind the guard linger '582 insuch downward movement,v until the pin strikes the guard plate A581,whereupon it will cause said guard plate to move with the lever 568, the

guard finger preventing the pin 570 from leaving thev slot 568a duringsuch continued downward movement. As the link 570 rises, it will permitthe guard plate 581 to rise until it strikes the shoulder C', whereuponsa-id guard plate will be arrested and the end of slot 568a opened topermit the pin 570a to be moved forwardlyT out of saidslot, if suchoperation is permitted by the bar- 577;.011 if the bar 577 is heldrearwardly, pin 57 0a will remain in the slot 568a in readi-v ness tocause another printing impression tobe made by the platen 505 upon thenext operation of the rock shaft 81.

The lever .568 carries a post 5681"` which passes through a slotfin theguard plate, on which post is`niounted an arm 584 carrying a pin 585 foreffecting the feed'of the tally roll strip, but as this forms no part ofmy described.

It willbe observed that the printing seg ments of the tally rollprinting mechanism are located within the casing of the machine and arethus protected from accidental injury, whereas the platen 505 for makinga printing impression therefrom, together with the frame and partsconnected therewith, are located outsideof thel casing 500, the levers568, the guard plate 581, and the paper feed operating arm 584projecting within the casing' but having detachable connection with`their operating part-s. Hence, when the casing is removed, although'present invention, it may not be further the machine' may be operatedand the typey p.

segments 561 positioned, no printing im pression can be takentherefrom.;

The main operating shaft 81 which is rocked in the operation of themachine, has

mounted thereon a cam 101 which vibratesa frame 105 having a restoring/bar 104:1 which restoring bar controls levers, shown in Fig. 7 and l'which are fully disclosed in the parent case, No. 98, 853, iled by meMay 20, 1916. These levers are connected'to the racks 100 and when theframe 105 is moved forwardly, it permits the racks to move forvafterwhich operation by the bars 56the wheels 119 or 268 arel thrown intomesh with the racks and as the frame. 105 is moved wardly under theimpelling action of.

lrearwardly, the restoring bar lOl will operate torestore all of theirracks to their normal or zer(` position, and in this way actu, ate theadding wheels 119' or 268.

The means for disabling the tally roll .printing mecha-nism consists ofthe bar 577 'which is operated by the adjustable stops vonj the papercarriage of the typewritmg mechanism,`which bar is normally held for-'.10

Ward by means of the springs 570. connected tothe uppere'nd of rod 570.When the bar 577 is in its forward position, as shown in '-Fig. 5, thepin 570a is out of engagement tally rollv attachment to becomeoperative. -This can be done either manually or by adjusting intoposition the typewriter' carriage at the 'forward end of the machine sothat i' 0ne-of the blocks 578 will push back the rod 577 and hold itinits retracted position. These features, however, form no part, ofluy-present invention, as they are set forth in the parent 'case and areclaimed in diviv in referred to. 135

sional opplications thereof which are there- `What I claim is: v

1. In an apparatus of theA character de- '-scribed, the combination of amain operatbe moved into and ing shaft, av platen operating rock shafthaving a-rock arm atlined thereto, Asaid rock arm having a slot in itsend, a vlbratable bar Voperated byl said main shaft and having a pin inregister with said slot when the parts are in their normal position,andmeans for moving said bar so lthat its carried pin will v out ofengagement with said slot.

2. In anapparatus of the character described, the combinationof a mainoperating shaft, a platen operating rock shaft, ai

rock arm aixed thereto and having a slot in its end, a vibratable baroperated by said main shaft and having means for engaging said slot,'andmeans'for locking-'said bar to said rock arm when the parts sopositioned are in other than home position.

3. In an apparatusof the character described, t-he combination of a mainoperating shaft, a platen operating rock shaft, a

rock arm affixed thereto and having a slot in -its end, avibratable baroperated b v said main shaft and provided with means to engage sardslot. a laterally movable element and means controlled by the positionof-sait element whereby said vibrat'rble bar is moved into and ontofengagementfwith said rock arm.

4. In an apparatus of the character described, the combination of a mainoperating shaft, a platen operating rock shaft, a rock arm affixedthereto and having Aa slot in its end. a vibratable bar operated by saidmain shaft, a pin on said bar designed to enter said slot. controllingmeans for said .bar to cause engagement .or disengagement therehetweenand said rock arm, a guard membe' for preventing the withdrawal of saidpin from said slot when the parts are in certain engaged positions. anda stop for moving said guard meLberto an unlocking position when theparts occupy their home position.

5. In an apparatus of the character described` the combination ofprinting type mov able to represent different numbers and their means ofoperation, a casing for housing said printing type. a vibratable platen`mounted on the outs-1de of said casing, and

automatically1 detachable connections between said platen and theoperating mechanism for said printing type.

In testimony whereof I hereunto atiix my signature, this 21st day 'ofMarch, 1918.

' oT'ro THIEME.

